The folks over at MAYA Design hacked their way to a touch-controlled sound system with this project they've dubbed the "Nano-Baker" (or "Stude-iPod") using a pair of Apple ear buds, a USB cable, a voltage regulator and a set of speakers. Here's how they pulled it off.

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First, remove the clock module from the dashboard and its housing and give it a new faceplate and black backing to make the contrast sharper.

Route the cables into the dashboard and put the clock back in its place. Now it's time to make a charging circuit. For this you'll need a low dropout regulator, which will be wired to the ignition switch. See the schematic below for details on how to connect it.